CERNIERA LAMPO DEL TIPO INVISIBILE

摘要

A slide fastener of the concealed or masked type having a pair of similar stringer tapes carrying along respective longitudinal edges a row of interlocking fastener elements. The stringer tape consists of a warp-knit structure having a web portion and a marginal edge portion interconnected by an interwale groove which defines an axis of fold along which the tape is folded on itself and which is greater in width than the rest of interwale grooves.